Gas bath-heater



(Nt aModeL) D. L. McOAHAN.

GAS BATH HEATER.

Patented Dec 2'7. 1887.

QXWWL awa UNITE STATES PATENT OFFICE.

DAVIS L. MOOAHAN, OF- BALTIMORE, MARYLAND.

GAS BATH-HEATER.

SPECIFICATION forming part of Letters Patent No. 375,424, dated December 27, 1887. Application filed April 9, 1886. Serial No. $8,361. (No model.)

To all whom it may concern:

Be it known that I, DAvIs L. MCCAHAN, a citizen of the United States, residing at Baltimore city, in the State of Maryland, have invented a new and useful Improvementin Heating Water by Gas, of which the following is a specification.

My invention relates to improvements in de vices for heating water in a bath or range boiler by a gas-stove, aerated gas or gasoline burner.

It is often desirable in the su mmer-time and at other times when there is no fire in the range to have some rapid and economical method of heating the water in a range-boiler. I accomplish this object by the device hereinafter described, reference being had to the drawings accompanying this specification and forming part thereof.

Figure 1 is a perspective view of the device in operative connection to the pipes of a rangeboiler. Fig. 2 shows a side and top perspective of the device disconnected from the boiler; and Fig. 3, the shelf, showing side straps or braces.

The device or heater represented at A is made circular in form, of cast or sheet metal, with round or dome-shaped top, and is connected at Bwith bottom pipe of boiler and at Owith side pipe of boiler. A shelf, D, is suspended by means of the braces F, which are bolted to the lugs E E of the heater. This shelf is to hold burners, which may be gasstove, aerated gas or gasoline, or similar burners. After they are lighted under the heater the heat causes the water to rise through 0 into the boiler, and cooler water, immediately entering through B, causes a rapid circulation of the water, thereby heating the whole body of it in the boiler and heater.

The device, when made of sheet metal, is stamped in two separate pieces, and then brazed or riveted together, or both riveted and brazed, .as in actual practice is done.

In the process of manufacture a flange or projection extends below the bottom of the device, which is useful to prevent the heat from escaping too quickly from under the bottom of the same. In making them of cast metal they are molded in one piece in the usual way; but in both cases outlet and inlet threaded holes are provided for connecting to the range-pipes. In the cast-metal device no bottom projection is formed, but it is made either dished or flat (as may be desired) on the bottom. 7

I am aware that a patent was issued to Mathews and Holt on April 2, 1878, for a device for heating water; but my invention is of adifferent form and construction and contains important improvements, no tubes for the passage of hot air or jacket or cover to assist in the heating being used in my device or claimed as necessary, and a'hanging shelf for the support of the lamp or burner being used as part of my invention, thereby occupying no floorroom, is also an important improvement.

Having described my invention, what I wish to-claim and secure by Letters Patent is 1. The combination, with the circulatingpipes B O and a supplemental heater attached thereto, of a hanging shelf adapted to support alamp or burner immediately under theheater, substantially as set forth.

2. The combination, with the circulatingpipes 13 C, of a supplemental heater attached to said pipes, the said heater having downwardly-projecting ears or lugs, substantially as and for the purpose specified.

3. The combination, with the circulatingpipes B O, a heater attached thereto, said heater having downwardly=projecting ears or lugs, of a shelf provided with side straps or braces adapted to be bolted to said ears or lugs, substantially as and for the purpose specified.

DAVIS L. MOCAHAN.

Witnesses:

Gno. MOOAFFRAY, S. A. MoRsE. 

